<template>
  <div class="container page">
    <div class="row">
      <div class="col-md-6 offset-md-3 col-xs-12">
        <h1 class="text-xs-center">{{ name }}</h1>
        <p class="text-xs-center">
          <!-- <a href="">Have an account?</a> -->
          <nuxt-link v-if="isLogin" to="/register">Need an accout?</nuxt-link>
          <nuxt-link v-else to="/login">Have an account?</nuxt-link>
        </p>

        <ul class="error-messages">
          <template v-for="(messages, field) in errors">
              <li v-for="(message, index) in messages" :key="message-index">{{ field }} {{ message }}</li>
          </template>
          <!-- <li>That email is already taken</li> -->
        </ul>

        <form @submit.prevent="onSubmit">
          <fieldset class="form-group" v-if="!isLogin">
            <input
              v-model="user.username"
              class="form-control form-control-lg"
              type="text"
              placeholder="Your Name"
              required
            />
          </fieldset>
          <fieldset class="form-group">
            <input
              v-model="user.email"
              class="form-control form-control-lg"
              type="email"
              placeholder="Email"
              required
            />
          </fieldset>
          <fieldset class="form-group">
            <input
              v-model="user.password"
              class="form-control form-control-lg"
              type="password"
              placeholder="Password"
              required
              minlength="8"
            />
          </fieldset>
          <button class="btn btn-lg btn-primary pull-xs-right">
            {{ name }}
          </button>
        </form>
      </div>
    </div>
  </div>
</template>

<script>
import { login, register } from "@/api/user"

// 尽在客户端加载 js-cookie 包
const Cookie = process.client ? require('js-cookie') : undefined

export default {
  middleware: 'notAuthenticated',
  name: "LoginIndex",
  computed: {
    isLogin() {
      return this.$route.name === "login";
    },
    name() {
      return this.isLogin ? "Sign in" : "Sign up";
    },
  },
  data() {
    return {
      user: {
        email: "",
        username: "",
        password: ""
      },
      errors: {} // 错误信息
    };
  },
  methods: {
    async onSubmit () {
        try {
            const func = this.isLogin ? login : register
            // 提交表单请求登录
            const { data } = await func({ user: this.user })
            // console.log(data)
            // TODO: 保存用户的登录状态
            this.$store.commit('setUser', data.user)

            // 为了防止刷新页面数据丢失，我们需要把数据持久化
            Cookie.set('user', data.user)

            // 跳转到首页
            this.$router.push("/")
        } catch (error) {
            // console.log('请求失败', error)
            console.dir(error)
            this.errors = error.response.data.errors
        }
    }
  }
};
</script>

<style>
</style>